Home / 1,407.26-2,111.70-1,135.10

Finding the Fourth Proportional to 1,407.26, 2,111.70 and 1,135.10

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Solution

The fourth proportional to 1,407.26, 2,111.70 and 1,135.10 is: 1,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.26 : 2,111.70 = 1,135.10 : x
  2. Step 2: Convert to fraction form
    1,407.26/2,111.70 = 1,135.10/x
  3. Step 3: Cross multiply
    1,407.26x = 2,111.70 × 1,135.10
  4. Step 4: Simplify right side
    1,407.26x = 2,396,990.67
  5. Step 5: Solve for x
    x = 2,396,990.67/1,407.26
  6. Step 6: Final answer
    x = 1,703.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.